: Which could tie in with the 'cooped up' comment. If she was that bored, what
: else did she do to amuse herself while she was waiting...?

Look at Forerunner porn...

I don't think she was cooped up in the sense of boredom or going stir crazy. She must have been monitoring the activities of the Flood and then perhaps felt helpless and useless without her big pappa (the MC).

She is programmed to act like a human being and most human beings would want to help save humanity or simply other humans.